Improvement in friction calender rolls for paper



llnitr mes @met demise.

'l WILLIAM H. SOLEY AND GEQRGE STITES, 0F PHLADELPHIA, PENN- SYLVANIA. Y

Letters Patent No. 101,532, dated April 5, 1870.

The Schedule referred to in these Letters Patent and making ofthe same.

Be it known that we, WILLIAM H. SOLEY and. GEORGE STITES, both ofthecity and county of Philadelphia in the State of Pennsylvania, haveinvented a new and useful Improvement in Friction Calender's forCalendering Paper, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings which makepart of this specification, and in which- Fignre 1 is a view inelevation of our improved machine, and

Figure 2,- a vertical transverse section of the same at the line a: x ofg. 1.

Our invention relates to that class of calendering machines in which therollers are driven by frictional contact; and

Its object is so to combine with a set of calendering-rolls, a set ofdriving-rolls, of different diameters, that' the planishing-roll may bedriven by `ijrictional contact, through the rolls of the other set, andmove at a speed ditlerent from that due to its relation to the rolls ofits own set.

In the accompanying drawings two sets of rolls are shown as mounted insuitable housings A A', and arranged endto end. j

Power is communicated, from any suitable prime mover, to a pulley, B,mounted on a shaft, b, which carries two rolls O Cof differentdiameters, mounted insnitable bearings in the housings A A'; these rollsare by preference made of chilled cast-iron.

A roll, D, of hard-paper, by preference, is mounted in the housings Aabove, and in contact with the roll C, and two similar rolls, D-D2, inthe same horizontal plin, are mounted in the housings A', above the rolA single roll may be 'substituted for the two rolls Dl D', but we iindthe use of two rolls more advan- Y tageons in insuring proper frictionalcontact.

A 'planishing-roll, E, by preference of chilled iron, is mounted inmovable journal-boxes in the housings A, so as to permitit to adjustitself to the thickness of the sheet passing between it and 'the roll D,and

is pressed down upon the roll D by weighted levers e, or screws, and a.driven roll, E', is similarly mounted in the housings A', above thepaper rolls I)x D2.

Y The planishing-roll E and the driven roll E are connected through acoupling-shaft, F, and universal joints f f', so that the two rolls E Ewill revolve together. l.

By reason of the greater ratio of difference in diameters of the rollsO* and E', as compared with that of the rolls4 C and E, the intermediatepaper-rolls D1 D2, acting merely to insure suicient friction to drivethe roll E', and also to drive itin the same direction as the lower rollC', we are enabledv to drive the planishing-roll E by frictional contactat a higher speed than that due to its frictional contact with the rollD, thereby obtainingI a differential motion, which we require for the'more perfect calendering of the paper, in a three-roll calender, betweenthe planishing-roll E and paper-roll D.

It' the roll E is released from frictional contact with the rolls Dl D2by relaxing or removing the weights from its levers, the planishing-rollE would be driven by its frictional contact with the roll D, and revolveat a nearly uniform speed therewith, as in the ordinary way.

By means of the universal joints ff, in the coupling-shaft F, wecompensate for any difference in the axial planes of the tworolls,'caused either by their dilerence in diameter, or by the wearingof the rolls, or by the working of the housings, &c.

lVe do not broadly claim ca-lemieriug rolls of metal and paper.

lVe claim as our invention- 1. The combination 0I' a set ofcalendering-rolls, a set of driving-rolls in separate housings, and auniversal joint connection between the upper rolls, substantially as andfor the purpose set forth.

2. .lhe combination ot'rthe driving-shaft, drivingrolls,y paper-rolls,planishing roll`, driven roll, and jointed coupling shaft all theseparts being consti-noted tooperate substantially as hereinbet'ore setforth.

In testimony whereof we have hereunto subscribed our names.

WM. H. SOLEY. GEORGE STITES.

Witnesses:

J. SNowDEN BELL, WM, B. DAYTON.

